Compilare: main.cpp: In function 'int main()': main.cpp:18:15: warning: unused variable 'k' [-Wunused-variable] 18 | int n,i,j,k,m,z,lin,col,poz1,poz2,xfin,yfin,x1,y1,x2,y2; | ^ main.cpp:18:39: warning: unused variable 'xfin' [-Wunused-variable] 18 | int n,i,j,k,m,z,lin,col,poz1,poz2,xfin,yfin,x1,y1,x2,y2; | ^~~~ main.cpp:18:44: warning: unused variable 'yfin' [-Wunused-variable] 18 | int n,i,j,k,m,z,lin,col,poz1,poz2,xfin,yfin,x1,y1,x2,y2; | ^~~~ main.cpp:22:10: warning: unused variable 'ch' [-Wunused-variable] 22 | char ch; | ^~